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微耕机车轮在水田壤中的牵引性能试验 被引量:2
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作者 曾剑辉 黎静 +5 位作者 李澜 邱浩辉 吴重玖 包有刚 刘木华 薛龙 《江西农业大学学报》 CAS CSCD 北大核心 2022年第1期198-204,共7页
【目的】了解微耕机车轮在水田中的牵引性能,可为新型水田轮的设计提供参考依据,提高其在水田表面的通过性。【方法】以直径为40 cm,宽度10 cm的微耕机橡胶轮为研究对象,在含水率为30%的土槽试验台进行单轮土槽试验,探究轮上载荷、滑转... 【目的】了解微耕机车轮在水田中的牵引性能,可为新型水田轮的设计提供参考依据,提高其在水田表面的通过性。【方法】以直径为40 cm,宽度10 cm的微耕机橡胶轮为研究对象,在含水率为30%的土槽试验台进行单轮土槽试验,探究轮上载荷、滑转率、车轮扭矩以及挂钩牵引力之间的关系。【结果】车轮扭矩和挂钩牵引力会随着轮上载荷和滑转率的增加而呈现增加的趋势;滑转率受轮上载荷的影响较大,当轮上载荷为264.6 N时,橡胶轮的滑转率趋近于1;车轮扭矩随轮上载荷的增加呈现先增大后减小的趋势,且在轮上载荷为227.36 N车轮驱动扭矩达到最大,为25.74 N·m;挂钩牵引力随着滑转率的增加也呈现增大的趋势,最大达到31.36 N。【结论】由于松软水田壤承载能力和抗剪切能力较弱,该微耕机的车轮所能承受的最大载荷为227.36 N,此时所能提供的最大挂钩牵引力为31.36 N,滑转率为0.88,说明该类型车轮在水田壤中的行驶性能较弱,车辆的能源主要消耗在克服车轮行驶阻力上。 展开更多
关键词 水田 微耕机 轮壤相互作用 滑转率 通过性
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Numerical simulation of tire/soil interaction using a verified 3D finite element model 被引量:6
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作者 Namjoo Moslem Golbakhshi Hossein 《Journal of Central South University》 SCIE EI CAS 2014年第2期817-821,共5页
The compaction and stress generation on terrain were always investigated based on empirical approaches or testing methods for tire/soil interaction.However,the analysis should be performed for various tires and at dif... The compaction and stress generation on terrain were always investigated based on empirical approaches or testing methods for tire/soil interaction.However,the analysis should be performed for various tires and at different soil strengths.With the increasing capacity of numerical computers and simulation software,finite element modeling of tire/terrain interaction seems a good approach for predicting the effect of change on the parameters.In this work,an elaborated 3D model fully complianning with the geometry of radial tire 115/60R13 was established,using commercial code Solidwork Simulation.The hyper-elastic and incompressible rubber as tire main material was analyzed by Moony-Rivlin model.The Drucker-Prager yield criterion was used to model the soil compaction.Results show that the model realistically predicts the laboratory tests outputs of the modeled tire on the soft soil. 展开更多
关键词 tire/soil interaction finite element method(FEM) soil compaction stress distribution inflation pressure
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